This is a little work devoted to the subject of the psychic treatment of disease. The neglect of the mental factor in medicine, according to its author, has been a serious weakness in the past and still continues. He takes for his text throughout the "unconscious mind," which is practically what is called an automatism of the perfected organism. He maintains that the mental factor including the use of the "unconscious mind" is present in all diseases functional and organic; that it is a causal factor in most organic diseases. Of course, a discussion of the phenomena and treatment of hysteria, neurasthenia and other psycho-physical conditions have taken up a large part of the work. While in some respects the work is open to criticism, as a whole, it will be profitable to the physician who peruses it.